EXB250-48S3V3-RJ

Current - Output (Max):	50A
Size / Dimension:	2.40" L x 2.28" W x 0.50" H (61.0mm x 57.9mm x 12.7mm)
Package / Case:	9-DIP Module, 1/2 Brick
Mounting Type:	Through Hole
Efficiency:	90%
Operating Temperature:	-40°C ~ 100°C
Features:	Remote On/Off, OCP, OVP, SCP, UVLO
Applications:	ITE (Commercial)
Voltage - Isolation:	1.5kV
Power (Watts):	165W
Series:	EXB250
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	3.3V
Voltage - Input (Max):	75V
Voltage - Input (Min):	33V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Obsolete
Packaging:	Bulk

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DC DC Converters

DC DC converters are electrical devices designed to convert an input voltage of one level to an output voltage of another level, usually higher or lower. The EXB250-48S3V3-RJ is a high-performance, ultra-reliable DC DC converter designed specifically to meet the needs of the telecom industry. It provides both positive and negative outputs as well as holds UL recognition, cUL 60825-1 Level 3, and EN 60950-1 approval.The EXB250-48S3V3-RJ features a wide-ranging, universal AC input of 85 to 265 VAC (47-63 Hz) and well as selectable 12, 24, and 48 Vdc inputs. It has adjustable output voltage in 3 ranges of ±30 Vdc, ±45 Vdc, and ±60 Vdc, with a maximum output power of 250 W. It also comes in both a convection-cooled (RJ) and a fan-cooled (RK) version.The EXB250-48S3V3-RJ is designed to be used in a wide variety of applications. Its ultra-wide 4:1 universal AC input provides flexibility when connecting to a wide range of AC power sources, while the output voltage can be adjusted in 3 ranges to fit most DC loads. In addition, it is optimized for telecom applications such as network switches and routers, base stations, central office switch power, broadcast, and surveillance systems.The EXB250-48S3V3-RJ has many advantages over other power converter devices due to its efficient operation and excellent reliability. It has an efficiency of up to 90% and a no-load power dissipation of <0.5 W. The internal components are protected by built-in electrical protection mechanisms that minimize potential damage due to short circuit, overload, overvoltage, and overtemperature conditions. It also features an advanced EMI/EMC filtering that meets EN 55011 Class B and FCC Class B emissions criteria.The operating principle of the EXB250-48S3V3-RJ is quite simple. It converts the AC power to DC power using an input rectifier, which is then filtered and regulated to provide a clean DC voltage. The DC voltage is then converted to the required output voltage using a switching power supply topology, such as a buck-boost converter or forward converter. The output voltage is then filtered and regulated to ensure the output is of the correct voltage and is free of any irregularities.In conclusion, the EXB250-48S3V3-RJ is a high-performance, ultra-reliable DC DC converter designed specifically for the telecom industry and other applications requiring a wide-ranging and cost-effective power converter device. It has an efficiency of up to 90% and comes with an advanced built-in electrical protection mechanism. The converter works by converting the AC input to DC and then using a switching topology to convert the DC voltage to the required output voltage.

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